I found LSD did not introduce things that weren't present already. Instead, it removed the filters that are necessary on a daily basis for me to get things done, and suddenly I was aware of and appreciating all the things that my subconscious normally sees and dismisses. The most vivid example of this was an awareness of the patterns and textures surrounding us all the time, as well as the relationship between spatial objects (e.g. a sign or a tree stood out as significant, rather than part of the "background").